A surgeon at the Queen Elizabeth Hospital in Birmingham, England, has been suspended after it was discovered that he signed his initials on a patient's liver.

He used an argon plasma coagulation tool to sear his brand in a patient's liver. The tool, used to stop bleeding by burning tiny blood vessels shut with a beam of electrically-charged argon gas, can cut up to an inch deep in human tissue.

The surgeon's signature was discovered by another doctor, who found the initials on the patient's organ during a different surgery. Now they fear that potentially hundreds of patients are walking around with organs bearing the surgeon's name. Doctors say the branding leaves only superficial burns, and isn't likely to cause any harm to the patients. Small solace when you're walking around with some bonkers doctor's insignia on your guts.